U.S. patent application number 14/403835 was filed with the patent office on 2015-05-28 for methods related to bevacizumab.
The applicant listed for this patent is MOMENTA PHARMACEUTICALS, INC.. Invention is credited to Carlos J. Bosques, Brian Edward Collins, Ganesh Kaundinya, John Robblee.
Application Number | 20150147317 14/403835 |
Document ID | / |
Family ID | 49674089 |
Filed Date | 2015-05-28 |
United States Patent
Application |
20150147317 |
Kind Code |
A1 |
Robblee; John ; et
al. |
May 28, 2015 |
METHODS RELATED TO BEVACIZUMAB
Abstract
The present invention relates to the characterization and
production of bevacizumab.
Inventors: |
Robblee; John; (Newton,
MA) ; Collins; Brian Edward; (Arlington, MA) ;
Kaundinya; Ganesh; (Bedford, MA) ; Bosques; Carlos
J.; (Arlington, MA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
MOMENTA PHARMACEUTICALS, INC. |
Cambridge |
MA |
US |
|
|
Family ID: |
49674089 |
Appl. No.: |
14/403835 |
Filed: |
May 31, 2013 |
PCT Filed: |
May 31, 2013 |
PCT NO: |
PCT/US13/43696 |
371 Date: |
November 25, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61654523 |
Jun 1, 2012 |
|
|
|
61783187 |
Mar 14, 2013 |
|
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Current U.S.
Class: |
424/133.1 ;
435/69.6; 530/387.3 |
Current CPC
Class: |
C07K 2317/24 20130101;
G01N 2333/4728 20130101; G01N 33/6854 20130101; G01N 33/577
20130101; G01N 2440/38 20130101; G01N 2560/00 20130101; G01N
2333/475 20130101; C07K 16/22 20130101; C07K 2317/41 20130101 |
Class at
Publication: |
424/133.1 ;
530/387.3; 435/69.6 |
International
Class: |
G01N 33/68 20060101
G01N033/68; C07K 16/22 20060101 C07K016/22 |
Claims
1-28. (canceled)
29. A method of manufacturing a bevacizumab drug product,
comprising: providing or obtaining a test glycoprotein preparation;
acquiring at least one value for a bevacizumab parameter listed in
Table 1 for the test glycoprotein preparation; and processing at
least a portion of the test glycoprotein preparation as bevacizumab
drug product if the at least one value for the test glycoprotein
preparation meets a reference criterion shown in Table 1 for the
parameter, thereby manufacturing a bevacizumab drug product.
30. The method of claim 29, comprising: acquiring values for any
combination of two or more bevacizumab parameters listed in Table
1; and processing at least a portion of the test glycoprotein
preparation as bevacizumab drug product if the values for the any
combination of two or more bevacizumab parameters for the test
glycoprotein preparation meet the corresponding reference criterion
shown in Table 1 for the parameters.
31. The method of claim 30, wherein the any combination of two or
more bevacizumab parameters comprises: 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, all, or a plurality of the bevacizumab
parameters listed in Table 1; or any two or more of parameter
numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and/or 15
shown in Table 1.
32. The method of claim 29, wherein the test glycoprotein
preparation comprises a recombinant antibody composition having a
first amino acid sequence with at least 85% identity to SEQ ID NO:1
(e.g., 90, 95, 98, or 100% identity to SEQ ID NO:1) and a second
amino acid sequence with at least 85% identity to SEQ ID NO:2
(e.g., 90, 95, 98, or 100% identity to SEQ ID NO:2).
33. The method of claim 32, wherein the first and second amino acid
sequences form a recombinant antibody.
34. The method of claim 29, wherein the test glycoprotein
preparation comprises a recombinant antibody composition having a
first amino acid sequence with 100% identity to SEQ ID NO:1 and a
second amino acid sequence with 100% identity to SEQ ID NO:2.
35. The method of claim 34, wherein the first and second amino acid
sequences form a recombinant antibody.
36. The method of claim 29, further comprising: after the step of
acquiring the value(s) and before the step of processing, obtaining
a plurality of assessments made by comparing the value(s) with a
corresponding reference criterion shown in Table 1.
37. The method of claim 29, wherein at least one value is directly
obtained by performing an analytical test on the test antibody or
glycoprotein preparation.
38. The method of claim 37, wherein the value is directly obtained
using a method provided in Table 2.
39. The method of claim 29, wherein the processing step comprises
combining the test antibody preparation with an excipient or
buffer.
40. The method of claim 29, wherein the processing step comprises
one or more of: formulating the test protein preparation;
processing the test protein preparation into a drug product;
combining the test protein preparation with a second component,
e.g., an excipient or buffer; changing the concentration of the
test protein in the preparation; lyophilizing the test protein
preparation; combining a first and second aliquot of the test
protein to provide a third, larger, aliquot; dividing the test
protein preparation into smaller aliquots; disposing the test
protein preparation into a container, e.g., a gas or liquid tight
container; packaging the test protein preparation; associating a
container comprising the test protein preparation with a label
(e.g., labeling); shipping or moving the test protein preparation
to a different location.
41. The method of claim 29, wherein the processed drug product or
antibody is approved under Section 351(k) of the Public Health
Service (PHS) Act.
42. The method of claim 29, wherein the processed drug product or
antibody is not approved under biologics license application (BLA)
under Section 351(a) of the Public Health Service (PHS) Act.
43. The method of claim 29, wherein the value for the test
glycoprotein preparation comprises an average (e.g., mean) of a
range of values for the parameter for multiple (e.g., 2, 3, 4, 5,
10, 15, 20, or more) batches or samples of the target protein.
44. The method of claim 29, wherein one or more, including all, of
the reference criterion shown in Table 1 is/are a specification for
commercial release of a drug product under Section 351(k) of the
Public Health Service (PHS) Act.
45. The method of claim 29, wherein the value is acquired for one,
two, or more samples or batches.
46. A method of manufacturing a bevacizumab drug product,
comprising: providing a host cell that is genetically engineered to
express a first amino acid sequence having a sequence with at least
about 85% identity to SEQ ID NO:1 (e.g., 90, 95, 98, or 100%
identity to SEQ ID NO:1) and a second amino acid sequence having a
sequence with at least about 85% identity to SEQ ID NO:2 (e.g., 90,
95, 98, or 100% identity to SEQ ID NO:2), wherein the expressed
amino acid sequences form a recombinant antibody composition,
culturing the host cell under conditions whereby the cell expresses
the first and second amino acid sequences, wherein the expressed
first and second amino acid sequences form recombinant antibodies,
harvesting the recombinant antibodies from the host cell culture to
produce an antibody preparation, acquiring a value for each
parameter listed in Table 1 for the antibody preparation; and
processing at least a portion of the antibody preparation into
bevacizumab drug product if the value for each parameter listed in
Table 1 for the antibody preparation meets the reference criterion
shown in Table 1, thereby manufacturing a bevacizumab drug
product.
47. The method of claim 46, comprising: providing a host cell that
is genetically engineered to express a first amino acid sequence
having the sequence of SEQ ID NO:1 and a second amino acid sequence
having the sequence of SEQ ID NO:2, wherein the expressed amino
acid sequences form a recombinant antibody composition, culturing
the host cell under conditions whereby the cell expresses the first
and second amino acid sequences, wherein the expressed first and
second amino acid sequences form recombinant antibodies, harvesting
the recombinant antibodies from the host cell culture to produce an
antibody preparation, acquiring at least one value for a
bevacizumab parameter listed in Table 1 for the antibody
preparation; and processing or directing the processing of at least
a portion of the antibody preparation as bevacizumab drug product
if the at least one value for the antibody preparation meets a
reference criterion shown in Table 1, thereby manufacturing a
bevacizumab drug product.
48. The method of claim 46, comprising: acquiring values for any
combination of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or
all, or a plurality of the bevacizumab parameters listed in Table
1; and processing at least a portion of the test glycoprotein
preparation as bevacizumab drug product if the values for the any
combination of two or more bevacizumab parameters for the test
glycoprotein preparation meet the corresponding reference criterion
shown in Table 1 for the parameters.
Description
[0001] This application claims the benefit of U.S. Provisional
Application No. 61/654,523, filed Jun. 1, 2012; and U.S.
Provisional Application 61/783,187, filed Mar. 14, 2013.
[0002] This disclosure provides compositions and methods related to
bevacizumab.
BACKGROUND OF THE INVENTION
[0003] Bevacizumab (Avastin.RTM.) is a recombinant humanized
monoclonal IgG1 antibody that binds to and inhibits the biologic
activity of human vascular endothelial growth factor (VEGF) in in
vitro and in vivo assay systems. Bevacizumab contains human
framework regions and the complementarity-determining regions of a
murine antibody that binds to VEGF. Bevacizumab has an approximate
molecular weight of 149 kD.
[0004] Bevacizumab is presently indicated for the treatment of (i)
metastatic colorectal cancer, with intravenous 5-fluorouracil-based
chemotherapy for first- or second-line treatment; (ii) non-squamous
non-small cell lung cancer, with carboplatin and paclitaxel for
first line treatment of unresectable, locally advanced, recurrent
or metastatic disease; (iii) metastatic breast cancer, with
paclitaxel for treatment of patients who have not received
chemotherapy for metastatic HER2-negative breast cancer; (iv)
glioblastoma, as a single agent for adult patients with progressive
disease following prior therapy; (v) metastatic renal cell
carcinoma with interferon-alpha (from Avastin.RTM. Prescribing
Information dated Dec. 21, 2011, Genentech, Inc.).
SUMMARY OF THE INVENTION
[0005] The present disclosure provides, in part, methods for
evaluating, identifying, and/or producing (e.g., manufacturing)
bevacizumab. In some instances, methods herein allow highly
resolved evaluation of bevacizumab useful for, inter alia,
manufacturing bevacizumab, characterizing bevacizumab, identifying
and/or confirming bevacizumab, monitoring the structure of
bevacizumab, comparing bevacizumab preparations made over time or
made under different conditions, and/or controlling the structure
of bevacizumab.
[0006] In certain aspects, the disclosure provides methods of
evaluating a glycoprotein preparation (e.g., such as a glycoprotein
drug substance or drug product preparation). Such methods can
include evaluating the glycoprotein preparation for the presence,
absence, level and/or ratio of one or more (e.g., two or more when
working with ratios) bevacizumab-specific parameters (i.e.,
acquiring information (e.g., value(s)) pertaining to the
bevacizumab-specific parameters). Such methods can also optionally
include providing, e.g., acquiring, a determination of whether the
presence, absence, level and/or ratio of one or more
bevacizumab-specific parameters evaluated meets a reference
criteria for the one or more bevacizumab-specific parameters, which
determination includes, for example, comparing the presence,
absence, level and/or ratio of one or more bevacizumab-specific
parameters evaluated with the reference criteria and/or confirming
that the presence, absence, level or ratio of one or more
bevacizumab-specific parameters evaluated has a defined (e.g.,
predefined) relationship with the reference criteria. In some
instances, the one or more (e.g., two or more when working with
ratios) bevacizumab-specific parameters evaluated include one or
more (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
parameters disclosed in Table 1.
[0007] In certain other aspects, the disclosure provides methods of
manufacturing bevacizumab drug product, such methods include a
first step of providing (e.g., producing or expressing (e.g., in
small scale or large scale cell culture) or manufacturing) or
obtaining (e.g., receiving and/or purchasing from a third party
(including a contractually related third party or a
non-contractually-related (e.g., an independent) third party) a
test glycoprotein preparation (e.g., a sample of a test
glycoprotein preparation), a second step of acquiring (e.g.,
detecting, measuring, receiving, or obtaining, as discussed
subsequently herein) at least one value (e.g., 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 11, 12, 13, 14, or
15) for a bevacizumab parameter listed in Table 1 for the test
glycoprotein preparation, and a third step of processing at least a
portion of the test glycoprotein preparation (e.g., processing a
portion of a manufacturing lot, batch, or run, an entire
manufacturing lot, batch, or run, or multiple manufacturing lots,
batches, or runs) as bevacizumab drug product (e.g., in a form or
packaging intended for marketing or administration as described
subsequently herein) if the at least one value for the test
glycoprotein preparation meets a reference criterion shown in Table
1 for the parameter, thereby manufacturing bevacizumab drug
product. In some instances, the second step of such methods
includes acquiring values for any combination of two or more
bevacizumab parameters listed in Table 1, and the third step of
such methods includes processing at least a portion of the test
glycoprotein preparation as bevacizumab drug product if the values
for the any combination of two or more bevacizumab parameters for
the test glycoprotein preparation meet the corresponding reference
criterion shown in Table 1 for the parameters. In some instances,
the any combination of two or more bevacizumab parameters can
include 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 of the
bevacizumab parameters listed in Table 1 and/or any two or more of
parameter numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 11, 12, 13, 14, and/or 15 shown in Table 1. In
some instances, the second step of such methods includes acquiring
a value for a plurality of bevacizumab parameters listed in Table
1, and the third step of such methods includes processing at least
a portion of the test glycoprotein preparation as bevacizumab drug
product if the value for the plurality for the test glycoprotein
preparation meets the corresponding reference criterion shown in
Table 1 for the parameters. In some instances, the plurality
includes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 of the
bevacizumab parameters listed in Table 1 and/or parameter numbers
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and/or 15 shown in
Table 1. In some instances, the second step of such methods
includes acquiring a value for at least one value of bevacizumab
parameters listed in Table 1, and the third step of such methods
includes processing at least a portion of the test glycoprotein
preparation as bevacizumab drug product if at least one of the at
least one value for the plurality for the test glycoprotein
preparation meets the corresponding reference criterion shown in
Table 1 for the parameter.
[0008] In some instances, the test glycoprotein preparation
obtained or produced in the first step of such methods includes a
recombinant antibody composition having a first amino acid sequence
with at least 85% identity to SEQ ID NO:1 (e.g., 90, 95, 98, or
100% identity to SEQ ID NO:1) and a second amino acid sequence with
at least 85% identity to SEQ ID NO:2 (e.g., 90, 95, 98, or 100%
identity to SEQ ID NO:2). In some instances, the recombinant
antibody composition includes a first amino acid sequence with 100%
identity to SEQ ID NO:1 and a second amino acid sequence with 100%
identity to SEQ ID NO:2. In either instance, the first and second
amino acid sequence combine when expressed to form the recombinant
antibody in which the first sequence is the antibody heavy chain
and the second sequence is the antibody light chain.
[0009] In some instances, evaluation methods include, for a
glycoprotein preparation, evaluating information (e.g., value(s))
pertaining to one or more bevacizumab-specific parameters and,
optionally, providing, e.g., acquiring, a determination of whether
the information meets a bevacizumab signature, e.g., by comparing
the information with the bevacizumab signature and/or confirming
that the information has a defined (e.g., predefined) relationship
with the bevacizumab signature.
[0010] In some instances, evaluation methods include, for a
glycoprotein preparation, evaluating information (e.g., value(s))
pertaining to one or more of the bevacizumab parameters disclosed
in Table 1, and, optionally, providing, e.g., acquiring, a
determination of whether the information meets a bevacizumab
signature, e.g., by comparing the information with the bevacizumab
signature and/or confirming that the information has a defined
(e.g., predefined) relationship with the bevacizumab signature. For
example, for a given glycoprotein preparation, methods can include:
evaluating HM5 and obtaining a value therefor, and, optionally,
determining whether the value conforms to the reference criterion
for HM5 provided in Table 1, wherein, in this example, the
reference criterion for HM5 is a bevacizumab signature. In this
instance, the value for HM5 would conform to the bevacizumab
signature if it is less than 0.09.
[0011] In another aspect, the disclosure provides methods of
identifying a test glycoprotein preparation (e.g., such as a
glycoprotein drug substance or drug product preparation) as
bevacizumab. In some instances, identification methods include, for
a glycoprotein preparation, evaluating information (e.g., value(s))
pertaining to one or more bevacizumab-specific parameters,
providing, e.g., acquiring, a determination of whether the
information meets a bevacizumab signature, e.g., by comparing the
information with the bevacizumab signature and/or confirming that
the information has a defined (e.g., predefined) relationship with
the bevacizumab signature, and identifying the glycoprotein
preparation as bevacizumab if the information meets the bevacizumab
signature.
[0012] In some instances, identification methods include, for a
glycoprotein preparation, evaluating information (e.g., value(s))
pertaining to one or more of the `bevacizumab parameters` disclosed
in Table 1, providing, e.g., acquiring, a determination of whether
the information meets a bevacizumab signature, e.g., by comparing
the information with the bevacizumab signature and/or confirming
that the information has a defined (e.g., predefined) relationship
with the bevacizumab signature, and identifying the glycoprotein
preparation as bevacizumab if the acquired information meets the
bevacizumab signature. For example, for a given glycoprotein
preparation, methods can include: evaluating HM5 and obtaining a
value therefor, determining whether the value conforms to the
reference criterion for HM5 provided in Table 1, and identifying
the glycoprotein preparation as bevacizumab if the information
conforms, wherein, in this example, the reference criterion for HM5
is a bevacizumab signature. In this instance, the value for HM5
would conform to the bevacizumab signature if it is less than
0.09.
[0013] In a further aspect, the disclosure provides methods of
producing (e.g., manufacturing) bevacizumab (e.g., bevacizumab drug
product). In some instances, production methods include, for a
glycoprotein preparation, evaluating information (e.g., value(s))
pertaining to one or more bevacizumab-specific parameters,
providing, e.g., acquiring, a determination of whether the
information meets a bevacizumab signature, e.g., by comparing the
information with the bevacizumab signature and/or confirming that
the information has a defined (e.g., predefined) relationship with
the bevacizumab signature, and processing the glycoprotein
preparation (e.g., as bevacizumab drug product) if the information
meets the bevacizumab signature, thereby producing bevacizumab
(e.g., bevacizumab drug product). In some instances, production
methods include, for a glycoprotein preparation, evaluating
information (e.g., value(s)) pertaining to one or more bevacizumab
parameters disclosed in Table 1, providing, e.g., acquiring, a
determination of whether the information meets a bevacizumab
signature, e., by comparing the information with the bevacizumab
signature and/or confirming that the information has a defined
(e.g., predefined) relationship with the bevacizumab signature, and
processing the glycoprotein preparation (e.g., as bevacizumab drug
product) if the information meets the bevacizumab signature,
thereby producing bevacizumab (e.g., bevacizumab drug product). For
example, for a given glycoprotein preparation, production methods
can include: evaluating a value for HM5 for the glycoprotein
preparation, comparing the value with the reference criterion for
HM5 provided in Table 1, determining whether the value obtained
meets with the reference value for HM5, and processing the
glycoprotein preparation as bevacizumab drug product if the value
obtained meets the reference criterion for HM5, wherein, in this
example, the reference criterion for HM5 is a bevacizumab
signature. In this instance, the value for HM5 would conform to the
reference criterion for HM5 if it is less than 0.09. In some
instances, these methods can further include packaging, labeling,
and/or shipping the bevacizumab drug product, e.g., as discussed in
further detail herein.
[0014] As used herein, a bevacizumab signature comprises a
plurality of reference criteria or rules for a plurality of
parameters that define bevacizumab. In some instances, a
bevacizumab signature can be a pharmaceutical specification, a
commercial product release specification, a product acceptance
criterion, a pharmacopeial standard, or a product labeling
description. In some instances, the bevacizumab signature comprises
a plurality of reference criteria or rules for a plurality of
parameters shown in Table 1:
TABLE-US-00001 TABLE 1 Parameter Parameter # Parameter Category
##STR00001## Reference Criterion (rule) 1 HM5 ##STR00002##
<0.90%* 2 HM6 ##STR00003## <0.05%* 3 HM7 ##STR00004##
<0.05%* 4 G0F ##STR00005## >60.00%* 5 G1F ##STR00006##
<20.00%* 6 G1F ##STR00007## <6.00%* 7 G2F ##STR00008##
<2.60%* 8 C-Terminal- Amount of lysine present at the C-terminus
of the <5.00%.sup.$ lysine heavy chain 9 HC-Pyroglu
Pyroglutamate (pyroglu) at the N-terminus of the <10.00%.sup.#
heavy chain 10 LC-Pyroglu Pyroglutamate at the N-terminus of the
light <3.00%.sup.# chain 11 HC-M256- Post-translational
modification of the M256 >4.00%.sup.# Sulfo residue (Kabat et
al. numbering) of the heavy chain-residue is oxidized to form
methionine sulfoxide 12 LC-K149-Glyc Post-translational glycation
at lysine 149 of the >0.50%.sup.# light chain 13 LC-135 Amount
of free cysteine (e.g. not paired in <1.20%{circumflex over ( )}
disulfides) at cysteine 135 in the light chain 14 HC148 Amount of
free cysteine (e.g. not paired in <10.00%{circumflex over ( )}
disulfides) at cysteine 148 in the heavy chain 15 HC204 Amount of
free cysteine (e.g. not paired in <5.00%{circumflex over ( )}
disulfides) at cysteine 204 in the heavy chain *For any given
parameter, percent refers to the number of moles of PNGase
F-released glycan X relative to total moles of PNGase F-released
glycan detected as disclosed in Table 2, wherein X represents the
parameter of interest (e.g., parameter(s) 1-7). .sup.#For any given
parameter, percent refers to the level of modified peptide Y
relative to the sum of the levels of modified peptide Y and
unmodified peptide Y, detected as disclosed in Table 2, wherein Y
represents the parameter of interest (e.g., parameter(s) 9-12).
.sup.$For C-terminal-lysine, percent refers to the level of
C-terminal-lysine-containing peptide relative to the sum of the
levels of C-terminal-lysine-containing and C-terminal-lysine-free
peptides detected as disclosed in Table 2. {circumflex over ( )}For
free cysteine, percent refers to the level of non-disulfide-linked
peptide relative to the sum of the levels of non-disulfide-linked
and disulfide-linked peptides, detected as disclosed in Table
2.
[0015] While the present disclosure provides exemplary units and
methods for the evaluation, identification, and production methods
disclosed herein (see, e.g., Tables 1 and 2), a person of ordinary
skill in the art will appreciate that performance of the
evaluation, identification, and production methods herein is not
limited to use of those units and/or methods. For example,
bevacizumab signatures described herein are generally described,
for each parameter, as a value for a glycan or structure relative
to total glycan on a mol/mol basis (see, e.g., Table 1). A person
of skill in the art understands that although the use of other
metrics or units (e.g., mass/mass, mole percent vs. weight percent)
to measure a described parameter might give rise to different
absolute values than those described herein, e.g., in Table 1, a
test glycoprotein preparation meets a disclosed bevacizumab
reference criterion or signature even if other units or metrics are
used, as long as the test glycoprotein preparation meets the herein
disclosed reference criterion or signature when the herein
disclosed units and metrics are used, e.g., allowing for the
sensitivity (e.g., analytical variability) of the method being used
to measure the value.
[0016] Bevacizumab parameters shown in Table 1 are parameters that,
alone, in any combination, or together, distinguish bevacizumab
from non-bevacizumab glycoprotein (see below). In some instances, a
bevacizumab parameter is part of the glycoprotein, e.g., connected
with the rest of the glycoprotein by a covalent bond, i.e., an
intrinsic parameter. Intrinsic parameters include the presence,
absence, level, ratio (with another entity), or distribution of a
physical moiety, e.g., a moiety arising from or associated with a
post-translational event. Exemplary parameters include the presence
(or absence), abundance, absolute or relative amount, ratio (with
another entity), or distribution of a glycan, a linkage, a
glycoform, or post-translationally added components of the
preparation. In some instances, a parameter is not part of the
glycoprotein but is present in the preparation with the
glycoprotein (i.e., in a glycoprotein preparation), i.e., an
extrinsic, parameter. Exemplary parameters of this type include the
presence (or absence), abundance, ratio (with another entity), or
distribution of, e.g., impurities, e.g., host cell proteins,
residue from purification processes, viral impurities, and
enclosure components.
[0017] In some instances, a bevacizumab signature comprises
reference criteria or rules for 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, or substantially all, parameters shown in Table 1. In
some instances, a bevacizumab signature comprises reference
criteria or rules for two or more (e.g., 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, or 15) of bevacizumab parameter(s) 1, 2, 3, 4,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and/or 15. In some instances, a
bevacizumab signature comprises predetermined reference criteria or
rules for 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15
parameters shown in Table 1. In some instances, predetermined
reference criteria can include reference criterion or criteria for:
parameter number(s) 1, 2, and/or 3 shown in Table 1; parameter
number(s) 1 and/or 2 from Table 1; parameter number(s) 1, 2, 3,
and/or 4 from Table 1; parameter number (s) 1, 2, 3, 4, 6, 7, 13,
or 14 from Table 1; parameter number (s) 1, 2, 3, 4, 5, 6, 7, 8,
13, 14, and/or 15 from Table 1; a combination of one or more (e.g.,
two or three) of parameter number(s) 1, 2, and 3 with one or more
(e.g., two, three, four, five, six, seven, eight, nine, ten,
eleven, or twelve or more) of parameter number(s) 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, and 15; parameter number(s) 1 and 2 from Table
1 further combined with one or more (e.g., two, three, four, five,
six, seven, eight, nine, ten, eleven, twelve, or thirteen) of the
other parameter number(s) from Table 1; one or more (e.g., two) of
parameter number(s) 1 and 2 from Table 1 combined with one or more
(e.g., two) of parameter number(s) 3 and 4; two or more (e.g.,
three or four) of parameter number(s) 1, 2, 3 and 4 from Table 1,
optionally further combined with one or more (e.g., two, three,
four, five, six, seven, eight, nine, ten, or eleven) of the other
parameter number(s) from Table 1; one or more of parameter
number(s) 1, 2, 3, and 4 from Table 1 with one or more (e.g., two,
three, four, five, six, seven, eight, nine, ten, or eleven) of the
other parameter number(s) in Table 1; one or more (e.g., two, three
or four) of parameter number(s) 1, 2, 3 and 4 from Table 1 combined
with one or more (e.g., two, three or four parameter number(s)
selected from the group consisting of parameter number(s) 6, 7, 13,
and 14; a combination of two or more (e.g., three, four, five, six,
seven, or eight) of parameter number(s) 1, 2, 3, 4, 6, 7, 13, and
14, optionally further combined with one or more (e.g., two, three,
four, five, six, or seven) of the other parameter number(s) in
Table 1; and/or one or more (e.g., three, four, five, six, seven,
or eight) of parameter number(s) 1, 2, 3, 4, 6, 7, 13, and 14
combined with one or more (e.g., two or three) of parameter
number(s) 5, 8, and 15.
[0018] In some instances, methods (i.e., evaluation,
identification, and production methods) can further include, e.g.,
one or more of: providing or obtaining a glycoprotein preparation
(e.g., such as a glycoprotein drug substance or a precursor
thereof); memorializing confirmation or identification of the
glycoprotein preparation as bevacizumab using a recordable medium
(e.g., on paper or in a computer readable medium, e.g., in a
Certificate of Testing, Certificate of Analysis, Material Safety
Data Sheet (MSDS), batch record, or Certificate of Analysis
(CofA)); informing a party or entity (e.g., a contractual or
manufacturing partner, a care giver or other end-user, a regulatory
entity, e.g., the FDA or other U.S., European, Japanese, Chinese or
other governmental agency, or another entity, e.g., a compendial
entity (e.g., U.S. Pharmacopoeia (USP)) or insurance company) that
a glycoprotein preparation is bevacizumab; selecting the
glycoprotein preparation for further processing (e.g., processing
(e.g., formulating) the glycoprotein preparation as a drug product
(e.g., a pharmaceutical product) if the glycoprotein preparation is
identified as bevacizumab; reprocessing or disposing of the
glycoprotein preparation if the glycoprotein preparation is not
identified as bevacizumab.
[0019] In some instances, methods (i.e., evaluation,
identification, and production methods) include taking action
(e.g., physical action) in response to the methods disclosed
herein. For example, the glycoprotein preparation is classified,
selected, accepted or discarded, released or withheld, processed
into a drug product, shipped, moved to a different location,
formulated, labeled, packaged, released into commerce, or sold or
offered for sale, depending on whether the preselected relationship
is met.
[0020] In some instances, processing may include formulating,
packaging (e.g., in a syringe or vial), labeling, or shipping at
least a portion of the glycoprotein preparation. In some instances,
processing includes formulating, packaging (e.g., in a syringe or
vial), and labeling at least a portion of the glycoprotein as
bevacizumab drug product. Processing can include directing and/or
contracting another party to process as described herein.
DEFINITIONS
[0021] As used herein, a glycoprotein refers to amino acid
sequences that include one or more oligosaccharide chains (e.g.,
glycans) covalently attached thereto. Exemplary amino acid
sequences include peptides, polypeptides and proteins. Exemplary
glycoproteins include glycosylated antibodies and antibody-like
molecules (e.g., Fc fusion proteins). Exemplary antibodies include
monoclonal antibodies and/or fragments thereof, polyclonal
antibodies and/or fragments thereof, and Fc domain containing
fusion proteins (e.g., fusion proteins containing the Fc region of
IgG1, or a glycosylated portion thereof). A glycoprotein
preparation is a composition or mixture that includes at least one
glycoprotein.
[0022] A glycoprotein preparation (e.g., such as a glycoprotein
drug substance or a precursor thereof) included herein is or
includes a glycoprotein (e.g., an antibody) that has a first amino
acid sequence with at least 85% identity to SEQ ID NO:1 and a
second amino acid sequence with at least 85% identity to SEQ ID
NO:2. In some instances, the first and/or second amino acid
sequence(s) have at least 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%,
98%, 99%, or 100% identity to SEQ ID NO:1 and/or at least 90%, 91%,
92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or 100% identity to SEQ ID
NO:2.
[0023] In some instances, a glycoprotein preparation (e.g., such as
a glycoprotein drug substance or a precursor thereof) can be a
sample from a proposed or test batch of bevacizumab drug substance
or drug product. As used herein, a batch of a glycoprotein
preparation refers to a single production run of the glycoprotein.
Evaluation of different batches thus means evaluation of different
production runs or batches. As used herein sample(s) refer to
separately procured samples. For example, evaluation of separate
samples could mean evaluation of different commercially available
containers or vials of the same batch or from different
batches.
[0024] As used herein, bevacizumab is the generic, compendial,
nonproprietary, or official FDA name for the product marketed as
Avastin.RTM. by Genentech/Roche Group and a product that is
interchangeable with or equivalent to the product marketed as
Avastin.RTM..
[0025] As used herein, evaluating, e.g., in the
evaluation/evaluating, identifying, and/or producing aspects
disclosed herein means reviewing, considering, determining,
assessing, analyzing, measuring, and/or detecting the presence,
absence, level, and/or ratio of one or more bevacizumab-specific
parameters in a glycoprotein preparation to provide information
pertaining to the one or more bevacizumab-specific parameters. In
some instances, evaluating can include performing a process that
involves a physical change in a sample or another substance, e.g.,
a starting material. Exemplary changes include making a physical
entity from two or more starting materials, shearing or fragmenting
a substance, separating or purifying a substance, combining two or
more separate entities into a mixture, performing a chemical
reaction that includes breaking or forming a covalent or
non-covalent bond. Evaluating can include performing an analytical
process which includes a physical change in a substance, e.g., a
sample, analyte, or reagent (sometimes referred to herein as
"physical analysis"), performing an analytical method, e.g., a
method which includes one or more of the following: separating or
purifying a substance, e.g., an analyte, or a fragment or other
derivative thereof, from another substance; combining an analyte,
or fragment or other derivative thereof, with another substance,
e.g., a buffer, solvent, or reactant; or changing the structure of
an analyte, or a fragment or other derivative thereof, e.g., by
breaking or forming a covalent or non-covalent bond, between a
first and a second atom of the analyte; or by changing the
structure of a reagent, or a fragment or other derivative thereof,
e.g., by breaking or forming a covalent or non-covalent bond,
between a first and a second atom of the reagent. In some
instances, evaluating a glycoprotein preparation includes detecting
the presence, absence, level or ratio of one or more (e.g., two or
more when working with ratios) disclosed in Table 1 using methods
disclosed in Table 2.
[0026] Information (e.g., value(s)) pertaining to a
bevacizumab-specific parameter or a bevacizumab parameter means
information, regardless of form, that describes the presence,
absence, abundance, absolute or relative amount, ratio (with
another entity), or distribution of a moiety associated with the
glycoprotein preparation and/or bevacizumab. Information is
evaluated in a glycoprotein preparation as disclosed herein.
Information is also conveyed in a bevacizumab signature.
Information can be qualitative, e.g., present, absent,
intermediate, or quantitative, e.g., a numerical value such as a
single number, or a range, for a parameter. In some instances,
information is from a single sample or batch or a plurality of
samples or batches. In some instances, information can be a range
or average (or other measure of central tendency), e.g., based on
the values from any X samples or batches, e.g., wherein at least of
the samples or batches is being evaluated for commercial release,
wherein X is equal to, at least, or no more than, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14 or 15. In some instances, information can
be, for example: a statistical function, e.g., an average, of a
number of values; a function of another value, e.g., of the
presence, distribution or amount of a second entity present in the
sample, e.g., an internal standard; a statistical function, e.g.,
an average, of a number of values; a function of another value,
e.g., of the presence, distribution or amount of a second entity
present in the sample, e.g., an internal standard; a value, e.g., a
qualitative value, e.g., present, absent, "below limit of
detection", "within normal limits" or intermediate. In some
instances, information can be a quantitative value, e.g., a
numerical value such as a single number, a range of values, a "no
less than x amount" value, a "no more than x amount" value. In some
instances, information can be abundance. Abundance can be expressed
in relative terms, e.g., abundance can be expressed in terms of the
abundance of a structure in relation to another component in the
preparation. E.g., abundance can be expressed as: the abundance of
a structure (or a first group of structures) in Table 1 relative to
the amount of protein; the abundance of a structure (or a first
group of structures) in Table 1 relative to the abundance of a
second structure (or second group of structures) in Table 1.
Abundance, e.g., abundance of a first structure relative to another
structure, can be with regard to the preparation as a whole, a
single molecule, or a selected site on the protein backbone. E.g.,
the parameter can be the relative proportion of a first structure
from Table 1 and a second structure from Table 1 at a selected site
and the value can be expressed as, e.g., a proportion, ratio or
percentage. Information can be expressed in any useful term or
unit, e.g., in terms of weight/weight, number/number,
number/weight, and weight/number. In many cases, the reference
criterion is defined by a range of values.
[0027] As used herein, acquire or acquiring (e.g., acquiring
information) means obtaining possession of a physical entity, or a
value, e.g., a numerical value, by "directly acquiring" or
"indirectly acquiring" the physical entity or value. Directly
acquiring means performing a process (e.g., performing an assay or
test on a sample or "analyzing a sample" as that term is defined
herein) to obtain the physical entity or value. Indirectly
acquiring refers to receiving the physical entity or value from
another party or source (e.g., a third party laboratory that
directly acquired the physical entity or value). Directly acquiring
a physical entity includes performing a process, e.g., analyzing a
sample, that includes a physical change in a physical substance,
e.g., a starting material. Exemplary changes include making a
physical entity from two or more starting materials, shearing or
fragmenting a substance, separating or purifying a substance,
combining two or more separate entities into a mixture, performing
a chemical reaction that includes breaking or forming a covalent or
non-covalent bond. Directly acquiring a value includes performing a
process that includes a physical change in a sample or another
substance, e.g., performing an analytical process which includes a
physical change in a substance, e.g., a sample, analyte, or reagent
(sometimes referred to herein as "physical analysis"), performing
an analytical method, e.g., a method which includes one or more of
the following: separating or purifying a substance, e.g., an
analyte, or a fragment or other derivative thereof, from another
substance; combining an analyte, or fragment or other derivative
thereof, with another substance, e.g., a buffer, solvent, or
reactant; or changing the structure of an analyte, or a fragment or
other derivative thereof, e.g., by breaking or forming a covalent
or non-covalent bond, between a first and a second atom of the
analyte; or by changing the structure of a reagent, or a fragment
or other derivative thereof, e.g., by breaking or forming a
covalent or non-covalent bond, between a first and a second atom of
the reagent. Exemplary analytical methods are shown in Table 2.
[0028] All literature and similar material cited in this
application, including, but not limited to, patents, patent
applications, articles, books, treatises, and web pages, regardless
of the format of such literature and similar materials, are
expressly incorporated by reference in their entirety. In the event
that one or more of the incorporated literature and similar
materials differs from or contradicts this application, including
but not limited to defined terms, term usage, described techniques,
or the like, this application controls. The section headings used
herein are for organizational purposes only and are not to be
construed as limiting the subject matter described in any way.
[0029] These, and other aspects of the invention, are described in
more detail below and in the claims.
DESCRIPTION OF THE DRAWINGS
[0030] FIG. 1|Amino acid sequence of heavy chain of bevacizumab
(SEQ ID NO: 1).
[0031] FIG. 2|Amino acid sequence of light chain of bevacizumab
(SEQ ID NO:2).
DETAILED DESCRIPTION
[0032] Detailed, high resolution, structural information about
Avastin.RTM. (e.g., related to the presence of signature glycan
species or quantitative analyses ascribing site-specificity for
backbone modifications) is useful to be able to make and test
products that qualify as bevacizumab, e.g., that are
interchangeable versions of Avastin.RTM.. Such information is also
useful in monitoring product changes and controlling structural
drift that may occur as a result of manufacturing changes. The art
supports, however, that information necessary to be able to make
and test products that qualify as bevacizumab, e.g., that are
interchangeable versions of Avastin.RTM., or any other branded
biologic, is unavailable (see, e.g., Nowicki, "Basic Facts about
Biosimilars," Kidney Blood Press. Res., 30:267-272 (2007); Hincal
"An Introduction To Safety Issues In Biosimilars/Follow-On
Biopharmaceuticals", J. Med. CBR Def., 7:1-18, (2009); Roger,
"Biosimilars: current status and future directions," Expert Opin.
Biol. Ther., 10(7):1011-1018 (2010)). One exemplary report states
that "[t]he size and complexity of . . . therapeutic proteins make
the production of an exact replica almost impossible; therefore,
there are no true generic forms of these proteins . . . .
Verification of the similarity of biosimilars to innovator
medicines remains a key challenge" (Hincal, supra). This disclosure
provides, in part, methods and compositions sufficient to make and
test products that qualify as bevacizumab, e.g., that are
interchangeable versions of Avastin.RTM..
[0033] Glycoprotein preparations can be obtained from any source.
In some instances, providing or obtaining a glycoprotein
preparation (e.g., such as a glycoprotein drug substance or a
precursor thereof), e.g., that is or includes a glycoprotein, can
include providing a host cell, e.g., a mammalian host cell (e.g., a
CHO cell) that is genetically engineered to express a glycoprotein
having an amino acid sequence at least 85% identical to SEQ ID NO:1
and an amino acid sequence at least 85% identical to SEQ ID NO:2
(e.g., a genetically engineered cell); culturing the host cell
under conditions suitable to express the glycoprotein (e.g., mRNA
and/or protein); and, optionally, purifying the expressed
glycoproteins, e.g., in the form of a recombinant antibody) from
the cultured cell, thereby producing a glycoprotein preparation. In
some instances, the host cell is genetically engineered to express
a glycoprotein having an amino acid sequence at least 90%, 91%,
92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or 100% identical to SEQ ID
NO:1 and an amino acid sequence at least 90%, 91%, 92%, 93%, 94%,
95%, 96%, 97%, 98%, 99%, or 100% identical to SEQ ID NO:2, wherein
the expressed amino acid sequences form a recombinant antibody
composition.
[0034] As used herein percent (%) sequence identity with respect to
a sequence is defined as the percentage of amino acid residues or
nucleotides in a candidate sequence that are identical with the
amino acid residues or nucleotides in the reference sequence, after
aligning the sequences and introducing gaps, if necessary, to
achieve the maximum percent sequence identity. (E.g., gaps can be
introduced in one or both of a first and a second amino acid or
nucleic acid sequence for optimal alignment and non-homologous
sequences can be disregarded for comparison purposes). Alignment
for purposes of determining percent sequence identity can be
achieved in various ways that are within the skill in the art, for
instance, using publicly available computer software such as BLAST,
ALIGN or Megalign (DNASTAR) software. Those skilled in the art can
determine appropriate parameters for measuring alignment, including
any algorithms needed to achieve maximal alignment over the full
length of the sequences being compared. In one embodiment, the
length of a reference sequence aligned for comparison purposes is
at least 30%, e.g., at least 40%, e.g., at least 50%, 60%, 70%,
80%, 90%, or 100% of the length of the reference sequence. The
amino acid residues or nucleotides at corresponding amino acid
positions or nucleotide positions are then compared. When a
position in the first sequence is occupied by the same amino acid
residue or nucleotide as the corresponding position in the second
sequence, then the molecules are identical at that position. In
some instances a product will include amino acid variants, e.g.,
species that differ at terminal residues, e.g., at one or two
terminal residues. In instances of such cases the sequence identity
which is compared is the identity between the primary amino acid
sequences of the most abundant active species in each of the
products being compared. In some instances sequence identity refers
to the amino acid sequence encoded by a nucleic acid that can be
used to make the product.
[0035] In some instances, a bevacizumab signature disclosed herein
can include 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15 of
the bevacizumab parameters (e.g., the reference criterion therefor)
shown in Table 1 (e.g., including any combination of 2 or more
(e.g., 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15) of parameter
numbers 1-15 shown in Table 1).
[0036] In some instances, a bevacizumab signature disclosed herein
can include, other structures or characteristics (whether intrinsic
or extrinsic) of bevacizumab, e.g., that distinguish bevacizumab
from non-bevacizumab glycoprotein (see application entitled Methods
of Evaluating and Making Biologics, filed on Jun. 1, 2012, as U.S.
Ser. No. 61/654,467, for exemplary structures or characteristics).
Examples of structures or characteristics include: the amount of
GalNAc in the preparation (e.g., relative to total glycans of the
preparation); the amount of truncated core glycans; the amount of
aglycosylated glycans; the amount of each species of high mannose
glycans; the amount of sialylated glycans or particular species of
sialylated glycans; the ratio of monosialylated:diasylated glycans,
the amount of diacetylated sialic acids (NeuXAc2), the amount of
one or more of: NeuGc; NeuAc; Neu5,7,Ac2; Neu5Gc,9Ac; Neu5,8Ac2;
Neu5,9Ac2; Neu4,5Ac2. Examples of parameters related to the glycan
linkage composition of a glycoprotein preparation can be: the
presence or amount of one or more of terminal fucose; terminal
mannose; terminal galactose; 2 linked mannose; 3.6 linked mannose;
terminal GlcNAc; terminal GalNAc; 4 linked GlcNAc; 4.6 linked
GlcNAc. A parameter may also be the ratio of one of these to
another or to another property. Examples of parameters related to
the glycoform composition of a glycoprotein preparation include:
the absence or presence of one or more specific glycoforms (e.g.,
one or more glycoforms described in Table 1); the amount or
abundance of a specific glycoform in the preparation relative to
total glycoforms (e.g., in a w/w basis); the ratio of one
particular glycoform to another. Examples of parameters related to
post-translational modification in the preparation include: the
absence or presence of one or more specific post-translational
modification; the abundance or distribution of one or more specific
post-translational modification. In some instances, the present
disclosure includes determining whether information evaluated for a
glycoprotein preparation meets a bevacizumab signature, e.g., by
comparing the information with the bevacizumab signature and/or
confirming that the information has a defined (e.g., predefined)
relationship with the bevacizumab signature.
[0037] In some instances, methods disclosed herein can be used to
confirm the identity and/or quality of bevacizumab preparations.
For example, methods can include assessing preparations (e.g.,
samples, lots, and/or batches) of a test glycoprotein to confirm
whether the test glycoprotein qualifies as bevacizumab, and,
optionally, qualifying the test protein as bevacizumab if
qualifying criteria (e.g. predefined qualifying criteria) are met;
thereby evaluating, identifying, and/or producing (e.g.,
manufacturing) bevacizumab.
[0038] Methods of the disclosure have a variety of applications and
include, e.g., quality control at different stages of manufacture,
analysis of bevacizumab preparations prior to or after completion
of manufacture (e.g., prior to or after distribution to a
fill/finish environment or facility), prior to or after release
into commerce (e.g., before distribution to a pharmacy, a
caregiver, a patient, or other end-user). Thus, the preparation can
be any preparation that potentially comprises bevacizumab. In an
embodiment the bevacizumab preparation is a drug substance (an
active pharmaceutical ingredient or "API") or a drug product (an
API formulated for use in a subject such as a human patient). In an
embodiment the preparation is from a stage of manufacture or use
that is prior to release to care givers or other end-users; prior
to packaging into individual dosage forms, such as syringes, pens,
vials, or multi-dose vials; prior to determination that the batch
can be commercially released, prior to production of a Certificate
of Testing, Material Safety Data Sheet (MSDS) or Certificate of
Analysis (CofA) of the preparation. In an embodiment the
glycoprotein preparation from an intermediate step in production,
e.g., it is after secretion of the glycoprotein from a cell but
prior to purification of drug substance.
[0039] Evaluations from methods of the invention are useful for
guiding, controlling or implementing a number of activities or
steps in the process of making, distributing, and monitoring and
providing for the safe and efficacious use of bevacizumab. Thus, in
an embodiment, e.g., responsive to the evaluation, e.g., depending
on whether a criterion is met, a decision or step is taken. The
method can further comprise one or both of the decision to take the
step and/or carrying out the step itself. E.g., the step can
comprise one in which the preparation (or another preparation for
which the preparation is representative) is: classified; selected;
accepted or discarded; released or processed into a drug product;
rendered unusable for commercial release, e.g., by labeling it,
sequestering it, or destroying it; passed on to a subsequent step
in manufacture; reprocessed (e.g., the preparation may undergo a
repetition of a previous process step or subjected to a corrective
process); formulated, e.g., into drug substance or drug product;
combined with another component, e.g., an excipient, buffer or
diluent; disposed into a container; divided into smaller aliquots,
e.g., unit doses, or multi-dose containers; combined with another
preparation of bevacizumab; packaged; shipped; moved to a different
location; combined with another element to form a kit; combined,
e.g., placed into a package with a delivery device, diluent, or
package insert; released into commerce; sold or offered for sale;
delivered to a care giver or other end-user; or administered to a
subject. E.g., based on the result of the determination or whether
one or more subject entities is present, or upon comparison to a
reference standard, the batch from which the preparation is taken
can be processed, e.g., as just described.
[0040] Methods described herein may include making a decision: (a)
as to whether a preparation may be formulated into drug substance
or drug product; (b) as to whether a preparation may be reprocessed
(e.g., the preparation may undergo a repetition of a previous
process step); or (c) that the preparation is not suitable for
formulation into drug substance or drug product. In instances the
method comprises: formulating as referred to in step (a),
reprocessing as referred to in step (b), or rendering the
preparation unusable for commercial release, e.g., by labeling it
or destroying it, as referred to in step (c).
Parameter Evaluation
[0041] The amino acid sequence of the heavy chain of bevacizumab
(Avastin.RTM.) is disclosed herein as SEQ ID NO:1. The amino acid
sequence of the light chain of bevacizumab (Avastin.RTM.) is
disclosed herein as SEQ ID NO:2.
[0042] Parameters disclosed herein can be analyzed by any available
suitable method. In some instances, glycan structure and
composition as described herein are analyzed, for example, by one
or more, enzymatic, chromatographic, mass spectrometry (MS),
chromatographic followed by MS, electrophoretic methods,
electrophoretic methods followed by MS, nuclear magnetic resonance
(NMR) methods, and combinations thereof. Exemplary enzymatic
methods include contacting a glycoprotein preparation with one or
more enzymes under conditions and for a time sufficient to release
one or more glycans (e.g., one or more exposed glycans). In some
instances, the one or more enzymes includes PNGase F. Exemplary
chromatographic methods include, but are not limited to, Strong
Anion Exchange chromatography using Pulsed Amperometric Detection
(SAX-PAD), liquid chromatography (LC), high performance liquid
chromatography (HPLC), ultra performance liquid chromatography
(UPLC), thin layer chromatography (TLC), amide column
chromatography, and combinations thereof. Exemplary mass
spectrometry (MS) include, but are not limited to, tandem MS,
LC-MS, LC-MS/MS, matrix assisted laser desorption ionisation mass
spectrometry (MALDI-MS), Fourier transform mass spectrometry
(FTMS), ion mobility separation with mass spectrometry (IMS-MS),
electron transfer dissociation (ETD-MS), and combinations thereof.
Exemplary electrophoretic methods include, but are not limited to,
capillary electrophoresis (CE), CE-MS, gel electrophoresis, agarose
gel electrophoresis, acrylamide gel electrophoresis,
SDS-polyacrylamide gel electrophoresis (SDS-PAGE) followed by
Western blotting using antibodies that recognize specific glycan
structures, and combinations thereof. Exemplary nuclear magnetic
resonance (NMR) include, but are not limited to, one-dimensional
NMR (1D-NMR), two-dimensional NMR (2D-NMR), correlation
spectroscopy magnetic-angle spinning NMR (COSY-NMR), total
correlated spectroscopy NMR (TOCSY-NMR), heteronuclear
single-quantum coherence NMR (HSQC-NMR), heteronuclear multiple
quantum coherence (HMQC-NMR), rotational nuclear overhauser effect
spectroscopy NMR (ROESY-NMR), nuclear overhauser effect
spectroscopy (NOESY-NMR), and combinations thereof.
[0043] In some instances, techniques described herein may be
combined with one or more other technologies for the detection,
analysis, and or isolation of glycans or glycoproteins. For
example, in certain instances, glycans are analyzed in accordance
with the present disclosure using one or more available methods (to
give but a few examples, see Anumula, Anal. Biochem. 350(1):1,
2006; Klein et al., Anal. Biochem., 179:162, 1989; and/or Townsend,
R.R. Carbohydrate Analysis" High Performance Liquid Chromatography
and Capillary Electrophoresis., Ed. Z. El Rassi, pp 181-209, 1995,
each of which is incorporated herein by reference in its entirety).
For example, in some instances, glycans are characterized using one
or more of chromatographic methods, electrophoretic methods,
nuclear magnetic resonance methods, and combinations thereof.
[0044] In some instances, methods for evaluating one or more
bevacizumab-specific parameters, e.g., in a glycoprotein
preparation, e.g., one or more of bevacizumab parameters disclosed
in Table 1 in a glycoprotein preparation are known in the art
and/or are disclosed in Table 2:
TABLE-US-00002 TABLE 2 Method(s) Relevant literature Parameter C18
UPLC Mass Chen and Flynn, Anal. Glycan(s) Spec.* Biochem., 370:
147-161 (2007) (e.g., N-linked glycan, exposed N- Chen and Flynn,
J. Am. Soc. linked glycan, glycan detection, glycan Mass Spectrom.,
20: 1821-1833 identification, and characterization; (2009) site
specific glycation; glycoform detection (e.g., parameters 1-7);
percent glycosylation; and/or aglycoosyl) Peptide LC-MS Dick et
al., Biotechnol. Bioeng., C-terminal lysine (e.g., parameter 8)
(reducing/non- 100: 1132-1143 (2008) reducing) LC-MS Dick et al.,
Biotechnol. Bioeng., (reducing/non- 100: 1132-1143 (2008)
reducing/alkylated) Weak cation Dick et al., Biotechnol. Bioeng.,
exchange (WCX) 100: 1132-1143 (2008) chromatography Peptide LC-MS
Chelius et al., Anal. Chem., (reducing/non- 78: 2370-2376 (2006)
reducing) Peptide LC-MS Yan et al., J. Chrom. A., Methionine
oxidation (e.g., parameter (reducing/non- 1164: 153-161 (2007); 11)
reducing) Xie et al., mAbs, 2: 379-394 (2010) Peptide LC-MS Miller
et al., J. Pharm. Sci., Site specific glycation (e.g., parameter
(reducing/non- 100: 2543-2550 (2011) 12) reducing) Peptide LC-MS
Wang et al., Anal. Chem., Free cysteine (e.g., parameters 13-15)
(reducing/non- 83: 3133-3140 (2011); reducing) Chumsae et al.,
Anal. Chem., 81: 6449-6457 (2009)
[0045] Literature shown in Table 2 are hereby incorporated by
reference in their entirety or, in the alternative, to the extent
that they pertain to one or more of the methods disclosed in Table
2.
EXAMPLES
Example 1
Characterization of Bevacizumab
[0046] Avastin.RTM. samples were analyzed to determine the amino
acid sequences of the heavy and light chains of the bevacizumab
antibody. The sequence of the heavy chain is shown as SEQ ID NO:1
and the sequence of the light chain is shown as SEQ ID NO:2.
[0047] Characterization of Avastin.RTM. was performed by orthogonal
methods. Measurements made included use of glycan profiling,
glycoform analysis, post-translational modification analysis, and
analysis of other intrinsic and extrinsic structures or features.
Of 113 Avastin.RTM./bevacizumab structures or features that were
measured or determined, 15 were determined to be bevacizumab
parameters, i.e., parameters of bevacizumab that distinguish
bevacizumab from non-bevacizumab antibody products. These 15
bevacizumab parameters and values are listed in Table 3 for an
illustrative sample of bevacizumab.
TABLE-US-00003 TABLE 3 Parameter Parameter No. Category.sup.1
Value.sup.2 1 HM5 0.71 2 HM6 0.01 3 HM7 0.01 4 G0F 68.57 5 G1F
16.68 6 G1F 5.26 7 G2F 2.24 8 C-terminal-K 2.00 9 HC-Pyroglu 1.90
10 LC-pyroglu 0.00 11 HC-M256- 6.10 Sulfo 12 LC-K149- 1.00 Glyc 13
LC135 1.00 14 HC148 6.10 15 HC204 3.20 .sup.1Detailed descriptions
of the structures/features of each parameter are provided in Table
1. .sup.2See Table 1 for unit information.
[0048] The information (values) shown for each bevacizumab
parameter in Table 3 were used to formulate a reference criterion
or rule for each bevacizumab parameter (shown in Table 1).
Example 2
Qualification Glycoprotein Preparations
[0049] The reference criterion or rules described in Table 1 were
used to determine whether blinded samples qualify as bevacizumab.
Multiple glycoprotein products were prepared and samples thereof
were blinded for identity analysis (samples A and B).
[0050] Sample A was analyzed and values were obtained for each of
the bevacizumab parameters in Table 1. The values of these
parameters in sample A are presented in Table 4 below. In addition,
values obtained for sample A were compared to the reference
criteria for bevacizumab as shown in Table 4:
TABLE-US-00004 TABLE 4 Comparison of "A" Values and Parameter
Parameter Sample "A" Reference reference No. category.sup.1 Value
Criterion.sup.2 criterion 1 HM5 3.1 <0.90% 2 HM6 2.59 <0.05%
3 HM7 1.18 <0.05% 4 G0F 45.64 >60.00% 5 G1F 22.83 <20.00%
6 G1F 5.90 <6.00% 7 G2F 3.47 <2.60% 8 C-terminal-K 45.20
<5.00% 9 HC-Pyroglu 100.0 <10.00% 10 LC-pyroglu 70.00
<3.00% 11 HC-M256- 5.50 >4.00% Sulfo 12 LC-K149- 0.90
>0.50% Glyc 13 LC135 2.00 <1.20% 14 HC148 13.40 <10.00% 15
HC204 4.10 <5.00% .sup.1Detailed descriptions of the
structures/features of each parameter are provided in Table 1.
.sup.2See Table 1 for unit information. Illustrates that a value
meets the reference criterion/rule.
[0051] Data plotted in Table 4 confirms that sample A is not
bevacizumab according to the methods described herein. Based on
these data, sample A does not meet a bevacizumab signature that
comprises all 15 parameters and, thus, does not qualify as
bevacizumab.
[0052] Sample B was analyzed and values were obtained for each of
the bevacizumab parameters in Table 1. The values of these
parameters in sample B are presented in Table 5 below. In addition,
values obtained for sample B were compared to the reference
criteria for bevacizumab as shown in Table 5:
TABLE-US-00005 TABLE 5 Comparison of sample "B" Values and
Parameter Parameter Sample "B" Reference reference No.
Category.sup.1 Value Criterion.sup.2 criterion 1 HM5 0.72 <0.90%
2 HM6 0.01 <0.05% 3 HM7 0.01 <0.05% 4 G0F 68.46 >60.00% 5
G1F 16.84 <20.00% 6 G1F 4.80 <6.00% 7 G2F 2.26 <2.60% 8
C-terminal-K 1.60 <5.00% 9 HC-Pyroglu 2.30 <10.00% 10
LC-pyroglu 0.00 <3.00% 11 HC-M256- 5.90 >4.00% Sulfo 12
LC-K149- 0.40 >0.50% Glyc 13 LC135 0.70 <1.20% 14 HC148 5.60
<10.00% 15 HC204 1.90 <5.00% .sup.1Detailed descriptions of
the structures/features of each parameter are provided in Table 1.
.sup.2See Table 1 for unit information. Illustrates that a value
meets the reference criterion/rule.
[0053] As shown in Table 5, sample B meets all listed reference
criteria signatures for bevacizumab. Accordingly, sample B does
meet a bevacizumab signature that includes all 15 parameters and,
thus, qualifies as bevacizumab.
[0054] While the methods have been described in conjunction with
various instances and examples, it is not intended that the methods
be limited to such instances or examples. On the contrary, the
methods encompass various alternatives, modifications, and
equivalents, as will be appreciated by those of skill in the art.
Sequence CWU 1
1
21453PRTArtificial SequenceDescription of Artificial Sequence
Synthetic polypeptide 1Glu Val Gln Leu Val Glu Ser Gly Gly Gly Leu
Val Gln Pro Gly Gly 1 5 10 15 Ser Leu Arg Leu Ser Cys Ala Ala Ser
Gly Tyr Thr Phe Thr Asn Tyr 20 25 30 Gly Met Asn Trp Val Arg Gln
Ala Pro Gly Lys Gly Leu Glu Trp Val 35 40 45 Gly Trp Ile Asn Thr
Tyr Thr Gly Glu Pro Thr Tyr Ala Ala Asp Phe 50 55 60 Lys Arg Arg
Phe Thr Phe Ser Leu Asp Thr Ser Lys Ser Thr Ala Tyr 65 70 75 80 Leu
Gln Met Asn Ser Leu Arg Ala Glu Asp Thr Ala Val Tyr Tyr Cys 85 90
95 Ala Lys Tyr Pro His Tyr Tyr Gly Ser Ser His Trp Tyr Phe Asp Val
100 105 110 Trp Gly Gln Gly Thr Leu Val Thr Val Ser Ser Ala Ser Thr
Lys Gly 115 120 125 Pro Ser Val Phe Pro Leu Ala Pro Ser Ser Lys Ser
Thr Ser Gly Gly 130 135 140 Thr Ala Ala Leu Gly Cys Leu Val Lys Asp
Tyr Phe Pro Glu Pro Val 145 150 155 160 Thr Val Ser Trp Asn Ser Gly
Ala Leu Thr Ser Gly Val His Thr Phe 165 170 175 Pro Ala Val Leu Gln
Ser Ser Gly Leu Tyr Ser Leu Ser Ser Val Val 180 185 190 Thr Val Pro
Ser Ser Ser Leu Gly Thr Gln Thr Tyr Ile Cys Asn Val 195 200 205 Asn
His Lys Pro Ser Asn Thr Lys Val Asp Lys Lys Val Glu Pro Lys 210 215
220 Ser Cys Asp Lys Thr His Thr Cys Pro Pro Cys Pro Ala Pro Glu Leu
225 230 235 240 Leu Gly Gly Pro Ser Val Phe Leu Phe Pro Pro Lys Pro
Lys Asp Thr 245 250 255 Leu Met Ile Ser Arg Thr Pro Glu Val Thr Cys
Val Val Val Asp Val 260 265 270 Ser His Glu Asp Pro Glu Val Lys Phe
Asn Trp Tyr Val Asp Gly Val 275 280 285 Glu Val His Asn Ala Lys Thr
Lys Pro Arg Glu Glu Gln Tyr Asn Ser 290 295 300 Thr Tyr Arg Val Val
Ser Val Leu Thr Val Leu His Gln Asp Trp Leu 305 310 315 320 Asn Gly
Lys Glu Tyr Lys Cys Lys Val Ser Asn Lys Ala Leu Pro Ala 325 330 335
Pro Ile Glu Lys Thr Ile Ser Lys Ala Lys Gly Gln Pro Arg Glu Pro 340
345 350 Gln Val Tyr Thr Leu Pro Pro Ser Arg Glu Glu Met Thr Lys Asn
Gln 355 360 365 Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr Pro Ser
Asp Ile Ala 370 375 380 Val Glu Trp Glu Ser Asn Gly Gln Pro Glu Asn
Asn Tyr Lys Thr Thr 385 390 395 400 Pro Pro Val Leu Asp Ser Asp Gly
Ser Phe Phe Leu Tyr Ser Lys Leu 405 410 415 Thr Val Asp Lys Ser Arg
Trp Gln Gln Gly Asn Val Phe Ser Cys Ser 420 425 430 Val Met His Glu
Ala Leu His Asn His Tyr Thr Gln Lys Ser Leu Ser 435 440 445 Leu Ser
Pro Gly Lys 450 2214PRTArtificial SequenceDescription of Artificial
Sequence Synthetic polypeptide 2Asp Ile Gln Met Thr Gln Ser Pro Ser
Ser Leu Ser Ala Ser Val Gly 1 5 10 15 Asp Arg Val Thr Ile Thr Cys
Ser Ala Ser Gln Asp Ile Ser Asn Tyr 20 25 30 Leu Asn Trp Tyr Gln
Gln Lys Pro Gly Lys Ala Pro Lys Val Leu Ile 35 40 45 Tyr Phe Thr
Ser Ser Leu His Ser Gly Val Pro Ser Arg Phe Ser Gly 50 55 60 Ser
Gly Ser Gly Thr Asp Phe Thr Leu Thr Ile Ser Ser Leu Gln Pro 65 70
75 80 Glu Asp Phe Ala Thr Tyr Tyr Cys Gln Gln Tyr Ser Thr Val Pro
Trp 85 90 95 Thr Phe Gly Gln Gly Thr Lys Val Glu Ile Lys Arg Thr
Val Ala Ala 100 105 110 Pro Ser Val Phe Ile Phe Pro Pro Ser Asp Glu
Gln Leu Lys Ser Gly 115 120 125 Thr Ala Ser Val Val Cys Leu Leu Asn
Asn Phe Tyr Pro Arg Glu Ala 130 135 140 Lys Val Gln Trp Lys Val Asp
Asn Ala Leu Gln Ser Gly Asn Ser Gln 145 150 155 160 Glu Ser Val Thr
Glu Gln Asp Ser Lys Asp Ser Thr Tyr Ser Leu Ser 165 170 175 Ser Thr
Leu Thr Leu Ser Lys Ala Asp Tyr Glu Lys His Lys Val Tyr 180 185 190
Ala Cys Glu Val Thr His Gln Gly Leu Ser Ser Pro Val Thr Lys Ser 195
200 205 Phe Asn Arg Gly Glu Cys 210
* * * * *